本篇内容主要讲解“Qt怎么设置按钮样式”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“Qt怎么设置按钮样式”吧!

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函数名

    //设置按钮样式
    static QString setPushButtonQss(QPushButton *btn,                               //按钮对象
                                    int radius = 5,                                 //圆角半径
                                    int padding = 8,                                //间距
                                    const QString &normalColor = "#34495E",         //正常颜色
                                    const QString &normalTextColor = "#FFFFFF",     //文字颜色
                                    const QString &hoverColor = "#4E6D8C",          //悬停颜色
                                    const QString &hoverTextColor = "#F0F0F0",      //悬停文字颜色
                                    const QString &pressedColor = "#2D3E50",        //按下颜色
                                    const QString &pressedTextColor = "#B8C6D1");   //按下文字颜色
    //设置文本框样式
    static QString setLineEditQss(QLineEdit *txt,                                   //文本框对象
                                  int radius = 3,                                   //圆角半径
                                  int borderWidth = 2,                              //边框大小
                                  const QString &normalColor = "#DCE4EC",           //正常颜色
                                  const QString &focusColor = "#34495E");           //选中颜色
    //设置进度条样式
    static QString setProgressBarQss(QProgressBar *bar,
                                     int barHeight = 8,                             //进度条高度
                                     int barRadius = 5,                             //进度条半径
                                     int fontSize = 9,                              //文字字号
                                     const QString &normalColor = "#E8EDF2",        //正常颜色
                                     const QString &chunkColor = "#E74C3C");        //进度颜色
    //设置滑块条样式
    static QString setSliderQss(QSlider *slider,                                    //滑动条对象
                                int sliderHeight = 8,                               //滑动条高度
                                const QString &normalColor = "#E8EDF2",             //正常颜色
                                const QString &grooveColor = "#1ABC9C",             //滑块颜色
                                const QString &handleBorderColor = "#1ABC9C",       //指示器边框颜色
                                const QString &handleColor = "#FFFFFF",             //指示器颜色
                                const QString &textColor = "#000000");              //文字颜色
    //设置单选框样式
    static QString setRadioButtonQss(QRadioButton *rbtn,                            //单选框对象
                                     int indicatorRadius = 8,                       //指示器圆角角度
                                     const QString &normalColor = "#D7DBDE",        //正常颜色
                                     const QString &checkColor = "#34495E");        //选中颜色
    //设置滚动条样式
    static QString setScrollBarQss(QWidget *scroll,                                 //滚动条对象
                                   int radius = 6,                                  //圆角角度
                                   int min = 120,                                   //指示器最小长度
                                   int max = 12,                                    //滚动条最大长度
                                   const QString &bgColor = "#606060",              //背景色
                                   const QString &handleNormalColor = "#34495E",    //指示器正常颜色
                                   const QString &handleHoverColor = "#1ABC9C",     //指示器悬停颜色
                                   const QString &handlePressedColor = "#E74C3C");  //指示器按下颜色

函数体

QString QUIHelper::setPushButtonQss(QPushButton *btn, int radius, int padding,
                                    const QString &normalColor,
                                    const QString &normalTextColor,
                                    const QString &hoverColor,
                                    const QString &hoverTextColor,
                                    const QString &pressedColor,
                                    const QString &pressedTextColor)
{
    QStringList list;
    list.append(QString("QPushButton{border-style:none;padding:%1px;border-radius:%2px;color:%3;background:%4;}")
                .arg(padding).arg(radius).arg(normalTextColor).arg(normalColor));
    list.append(QString("QPushButton:hover{color:%1;background:%2;}")
                .arg(hoverTextColor).arg(hoverColor));
    list.append(QString("QPushButton:pressed{color:%1;background:%2;}")
                .arg(pressedTextColor).arg(pressedColor));

    QString qss = list.join("");
    btn->setStyleSheet(qss);
    return qss;
}

QString QUIHelper::setLineEditQss(QLineEdit *txt, int radius, int borderWidth,
                                  const QString &normalColor,
                                  const QString &focusColor)
{
    QStringList list;
    list.append(QString("QLineEdit{border-style:none;padding:3px;border-radius:%1px;border:%2px solid %3;}")
                .arg(radius).arg(borderWidth).arg(normalColor));
    list.append(QString("QLineEdit:focus{border:%1px solid %2;}")
                .arg(borderWidth).arg(focusColor));

    QString qss = list.join("");
    txt->setStyleSheet(qss);
    return qss;
}

QString QUIHelper::setProgressBarQss(QProgressBar *bar, int barHeight,
                                     int barRadius, int fontSize,
                                     const QString &normalColor,
                                     const QString &chunkColor)
{

    QStringList list;
    list.append(QString("QProgressBar{font:%1pt;background:%2;max-height:%3px;border-radius:%4px;text-align:center;border:1px solid %2;}")
                .arg(fontSize).arg(normalColor).arg(barHeight).arg(barRadius));
    list.append(QString("QProgressBar:chunk{border-radius:%2px;background-color:%1;}")
                .arg(chunkColor).arg(barRadius));

    QString qss = list.join("");
    bar->setStyleSheet(qss);
    return qss;
}

QString QUIHelper::setSliderQss(QSlider *slider, int sliderHeight,
                                const QString &normalColor,
                                const QString &grooveColor,
                                const QString &handleBorderColor,
                                const QString &handleColor,
                                const QString &textColor)
{
    int sliderRadius = sliderHeight / 2;
    int handleSize = (sliderHeight * 3) / 2 + (sliderHeight / 5);
    int handleRadius = handleSize / 2;
    int handleOffset = handleRadius / 2;

    QStringList list;
    int handleWidth = handleSize + sliderHeight / 5 - 1;
    list.append(QString("QSlider::horizontal{min-height:%1px;color:%2;}").arg(sliderHeight * 2).arg(textColor));
    list.append(QString("QSlider::groove:horizontal{background:%1;height:%2px;border-radius:%3px;}")
                .arg(normalColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::add-page:horizontal{background:%1;height:%2px;border-radius:%3px;}")
                .arg(normalColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::sub-page:horizontal{background:%1;height:%2px;border-radius:%3px;}")
                .arg(grooveColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::handle:horizontal{width:%3px;margin-top:-%4px;margin-bottom:-%4px;border-radius:%5px;"
                        "background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,stop:0.6 %1,stop:0.8 %2);}")
                .arg(handleColor).arg(handleBorderColor).arg(handleWidth).arg(handleOffset).arg(handleRadius));

    //偏移一个像素
    handleWidth = handleSize + sliderHeight / 5;
    list.append(QString("QSlider::vertical{min-width:%1px;color:%2;}").arg(sliderHeight * 2).arg(textColor));
    list.append(QString("QSlider::groove:vertical{background:%1;width:%2px;border-radius:%3px;}")
                .arg(normalColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::add-page:vertical{background:%1;width:%2px;border-radius:%3px;}")
                .arg(grooveColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::sub-page:vertical{background:%1;width:%2px;border-radius:%3px;}")
                .arg(normalColor).arg(sliderHeight).arg(sliderRadius));
    list.append(QString("QSlider::handle:vertical{height:%3px;margin-left:-%4px;margin-right:-%4px;border-radius:%5px;"
                        "background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,stop:0.6 %1,stop:0.8 %2);}")
                .arg(handleColor).arg(handleBorderColor).arg(handleWidth).arg(handleOffset).arg(handleRadius));

    QString qss = list.join("");
    slider->setStyleSheet(qss);
    return qss;
}

QString QUIHelper::setRadioButtonQss(QRadioButton *rbtn, int indicatorRadius,
                                     const QString &normalColor,
                                     const QString &checkColor)
{
    int indicatorWidth = indicatorRadius * 2;

    QStringList list;
    list.append(QString("QRadioButton::indicator{border-radius:%1px;width:%2px;height:%2px;}")
                .arg(indicatorRadius).arg(indicatorWidth));
    list.append(QString("QRadioButton::indicator::unchecked{background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,"
                        "stop:0.6 #FFFFFF,stop:0.7 %1);}").arg(normalColor));
    list.append(QString("QRadioButton::indicator::checked{background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,"
                        "stop:0 %1,stop:0.3 %1,stop:0.4 #FFFFFF,stop:0.6 #FFFFFF,stop:0.7 %1);}").arg(checkColor));

    QString qss = list.join("");
    rbtn->setStyleSheet(qss);
    return qss;
}

QString QUIHelper::setScrollBarQss(QWidget *scroll, int radius, int min, int max,
                                   const QString &bgColor,
                                   const QString &handleNormalColor,
                                   const QString &handleHoverColor,
                                   const QString &handlePressedColor)
{
    //滚动条离背景间隔
    int padding = 0;

    QStringList list;

    //handle:指示器,滚动条拉动部分 add-page:滚动条拉动时增加的部分 sub-page:滚动条拉动时减少的部分 add-line:递增按钮 sub-line:递减按钮

    //横向滚动条部分
    list.append(QString("QScrollBar:horizontal{background:%1;padding:%2px;border-radius:%3px;min-height:%4px;max-height:%4px;}")
                .arg(bgColor).arg(padding).arg(radius).arg(max));
    list.append(QString("QScrollBar::handle:horizontal{background:%1;min-width:%2px;border-radius:%3px;}")
                .arg(handleNormalColor).arg(min).arg(radius));
    list.append(QString("QScrollBar::handle:horizontal:hover{background:%1;}")
                .arg(handleHoverColor));
    list.append(QString("QScrollBar::handle:horizontal:pressed{background:%1;}")
                .arg(handlePressedColor));
    list.append(QString("QScrollBar::add-page:horizontal{background:none;}"));
    list.append(QString("QScrollBar::sub-page:horizontal{background:none;}"));
    list.append(QString("QScrollBar::add-line:horizontal{background:none;}"));
    list.append(QString("QScrollBar::sub-line:horizontal{background:none;}"));

    //纵向滚动条部分
    list.append(QString("QScrollBar:vertical{background:%1;padding:%2px;border-radius:%3px;min-width:%4px;max-width:%4px;}")
                .arg(bgColor).arg(padding).arg(radius).arg(max));
    list.append(QString("QScrollBar::handle:vertical{background:%1;min-height:%2px;border-radius:%3px;}")
                .arg(handleNormalColor).arg(min).arg(radius));
    list.append(QString("QScrollBar::handle:vertical:hover{background:%1;}")
                .arg(handleHoverColor));
    list.append(QString("QScrollBar::handle:vertical:pressed{background:%1;}")
                .arg(handlePressedColor));
    list.append(QString("QScrollBar::add-page:vertical{background:none;}"));
    list.append(QString("QScrollBar::sub-page:vertical{background:none;}"));
    list.append(QString("QScrollBar::add-line:vertical{background:none;}"));
    list.append(QString("QScrollBar::sub-line:vertical{background:none;}"));

    QString qss = list.join("");
    scroll->setStyleSheet(qss);
    return qss;
}

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